JP4182629B2

JP4182629B2 - High frequency relay

Info

Publication number: JP4182629B2
Application number: JP2000193413A
Authority: JP
Inventors: 貴俊林; 厚仲畑; 智啓田口; 託嗣山下
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-11-25
Filing date: 2000-06-27
Publication date: 2008-11-19
Anticipated expiration: 2020-06-27
Also published as: JP2001216880A

Description

【０００１】
【発明の属する技術分野】
本発明は、高周波リレーに関するものである。
【０００２】
【従来の技術】
従来の高周波リレーとしては図１２に示す構造のものがある。
【０００３】
この従来例は、リレー機構部を配設するベース１００と、このベース１００に被着されるケース１０１と、継鉄１０２，コイル１０３、鉄心１０４からなる電磁石ブロック１０５と、カードブロック１０６と、シールドボックス１０７と、カードブロック１０６側に設けられた可動接点ばね板１０８，１０８と、固定接点端子１０９ａ〜１０９ｄ等から構成されており、シールドボックス１０７は一枚の金属板から折り曲げ加工と打ち抜き加工によりボックス部とアース端子１１０…を一体形成している。
【０００４】
この従来例のカードブロック１０６は、略直方体状のカード１１２の長手方向一端部に設けた貫通孔に永久磁石１１３を介在させた一対の接極子１１４，１１４を配設し、一方の接極子１１４を上記電磁石ブロック１０５の鉄心１０４の一方の磁極面と継鉄１０２の一端部の先端部との間に位置させ、他方の接触子１１４の鉄心１０４の他方の磁極面と継鉄１０２の他端側の先端部との間に位置するように電磁石ブロック１０５上に載置する構成である。
【０００５】
図１３（ａ），（ｂ）はこの従来例のケース１０１を外した状態の平面図、正面断面図を示しており、この図から分かるようにこの従来例のカードブロック１０６のカード１１２は、平衡ばね１１５で吊られた状態にある。
【０００６】
【発明が解決しようとする課題】
ところで上記の従来例ではカードブロック１０６のカード１１２が、平衡ばね１１５で吊られた状態にあるため、高さの精度が出し難いという問題があった。
【０００７】
そのためこの従来例ではシールドボックス１０７の底部と可動接点ばね板１０８との距離Ｈを小さくできず、回路に流れる高周波信号とのマッチングが取れ難くという問題があった。
【０００８】
また固定接点端子１０９ａ〜１０９ｃの長さを長くしなければならず、その結果固定接点端子１０９ａ〜１０９ｃの垂直度の精度が低くなり、結果高周波特性がばらつくという問題があった。
【０００９】
本発明は、上述の問題点に鑑みて為されたもので、その目的とするところは、可動接点ばね板の配置高さを高精度とすることができ、高周波特性が安定した高周波リレーを提供することにある。
【００１０】
【課題を解決するための手段】
請求項１の発明では、アース端子に電気的接続されたアース接点部及び固定接点端子の固定接点部を配置したシールド空間をベース上に設け、該シールド空間内に、固定接点部に対して接触開離自在で且つ固定接点部から開離しているときにアース接点部に接触するように可動接点ばね板を配置するとともに、該可動接点ばね板を支持しているカードを駆動する電磁石ブロックをシールド空間外のベースに配設し、ベースの上面側におけるシールド空間の両端側に一対の側壁を立設した高周波リレーにおいて、ベースの各側壁の上端には、両側壁が並ぶ方向におけるカードの両端部に設けた回動枢軸部を回動自在に枢支してカードをシールド空間上方に橋架配置する支持手段が形成され、回動枢軸部は先部に正面断面が円形の軸部を備えるとともに、軸部の背部に下部の正面断面が逆三角形であって下端を軸部の中心の高さ位置に一致させた回動支点部を一体に備え、支持手段は側壁の上端面で回動支点部の下端に当接する支点台と、支点台に連続して側壁の上端部に形成され上端開放であって両側内面に軸部外面を回動自在に接面させる角孔とからなることを特徴とする。
【００１４】
請求項２の発明では、請求項１の発明において、上記軸部の断面円形部分を上下２分する位置よりも上方の周面に下部が一体となり、上面がカードの上面と同じ高さとなった補強リブを軸部の全長に亘って一体形成したことを特徴とする。
【００１５】
請求項３の発明では、請求項１の発明において、上記軸部の頂部に下部が一体となり、上面がカードの上面と同じ高さとなった補強リブを軸部の全長に亘って一体形成したことを特徴とする。
【００１６】
請求項４の発明では、請求項１乃至３の何れかの発明において、前記角孔の底部と、前記軸部の下端との間に隙間を設けて成ることを特徴とする。
【００１７】
請求項５の発明では、請求項１乃至４の何れかの発明において、前記ベース上に被着するケースの天井面に該カード側へ突出せる回動支持部を設け、前記ケースの天井面側に対向する前記カードの部位に、前記回動支持部がはまって該回動支持部のカード側の面で底部がカード自体の回転可能なように支持される凹み部を設けたことを特徴とする。
【００１８】
請求項６の発明では、請求項１乃至５の何れかの発明において、前記電磁石ブロックに備えられ、電磁石ブロックの励磁時に吸引されて動作する接極子により押される前記カードの位置と、電磁石ブロックの非励磁時に、前記カードを所定の位置へ復帰させる復帰ばねにより押される前記カードの位置とが該カードを挟んで対向する位置としたことを特徴とする。
【００１９】
請求項７の発明では、請求項６の発明において、上記カードは、成形のゲート跡が中心で且つ上記復帰ばねの配置位置よりも上方の位置となるようにゲートが設けられた成形金型を用いて成形された合成樹脂成形品からなることを特徴とする。
【００２０】
【発明の実施の形態】
以下本発明を一実施形態により説明する。
【００２１】
本実施形態は図１、図２に示すように合成樹脂成形材からなるベース１と、このベース１上に配設されるリレー機構部と、ベース１に被着する合成樹脂成形剤からなる箱状のケース２とで構成される。
【００２２】
リレー機構部の主要な構成である電磁石ブロック５は励磁コイル６を巻回したコイルボビン７と、コイルボビン７の中心透孔に貫挿させた鉄心８と、コイルボビン７の一端側にのぞいた鉄心８の一端を先部板面にかしめ固定して、この先部よりコイルボビン７に並行するように折り曲げてこの折曲片の先端をコイルボビン７の他端側に延長した継鉄９とから構成される。
【００２３】
この電磁石ブロック５は、コイルボビン７に設けたコイル端子１０、１０の下部を図４に示すようにベース１に設けた挿通孔１１よりベース１下面側に突出するようにベース１上に配置される。
【００２４】
電磁石ブロック５の励磁時に吸引駆動される接極子１２はＬ字状に曲げられた鉄片により形成され、一片１２ａをコイルボビン７の他端側に露出した鉄心８の他端に対向させるとともにその屈曲部の内隅を上記継鉄９の折曲片の先端に回動自在に当てるように配設される。また他片１２ｂの先端を後述するカード４の側面に当接させるようになっている。
【００２５】
ヒンジばね３は接極子１２の配設側のベース１上の一端部に設けた側壁２５の低位部１３に形成せる圧入溝１４に下部を圧入して配置され、一側端の上側より斜交いに延長形成した押さえ片３ａの先部で接極子１２の屈曲部の外隅を押圧して接極子１２の内隅部を継鉄９に押し当てて保持するようになっている。
【００２６】
電磁石ブロック５の配設部位と並行するベース１の片側上部には隔壁１５で電磁石ブロック５の配設部位と区切られ、隔壁１５及びベース１の一方側の側壁３６と両端の側壁２５とで囲まれたベース１上空間を接点部を内包するシールド部の配設部位としている。
【００２７】
このシールド部は並行配設される２枚のシールド板１６Ａ，１６Ｂから構成され、シールド部配設部位の両端側の側壁１５の内側面に沿うようにベース１上に図３（ａ）に示すように形成した各リブ１７の両側面に両シールド板１６Ａ，１６Ｂの両端部の対向面を接面させて配設される。
【００２８】
このリブ１７はベース１のシールド板１６Ａ，１６Ｂの位置決めを行うためのもので、両シールド板１６Ａ，１６Ｂの配設位置はリブ１７の成形精度により決まり、しかもシールド板１６Ａ，１６Ｂの対向面側を接面する構成であるためシールド板１６Ａ，１６Ｂの板厚のばらつきの影響を受けず、そのためシールド板１６Ａ，１６Ｂの内側の板面間距離を高精度に設定できる。
【００２９】
このシールド板１６Ａ，１６Ｂ間を２分する中心線上において、シールド板１６Ａ，１６Ｂの中央位置に対応する位置と、上記各リブ１７の近傍の位置とに図３（ａ）に示すように夫々設けた孔１８を介して固定接点端子１９ａ、１９ｂ、１９ｃを夫々貫設してあり、各固定接点端子１９ａ〜１９ｃの固定接点２０をシールド板１６Ａ，１６Ｂで囲まれた空間内に臨ませている。
【００３０】
ここでシールド部の配設部位の両端側にあるベース１の各側壁２５の上端には、接極子１２により駆動されるカード４の両端部に設けた回動枢軸部２１を支持してカード４をシールド部上方に橋架配置する支持部（支持手段）２２，２２を形成している。
【００３１】
カード４は可動接点ばね板２３Ａ，２３Ｂのインピーダンスに影響を与えるのを少なくし、特性インピーダンスの整合をとりやすくするために、空気の誘電率に近いテフロン（誘電率２．０）等の合成樹脂成形材料を使用した成形品からなり、上部両端面に回動枢軸部２１を一体形成するとともに下部両端部には可動接点ばね板２３Ａ，２３Ｂの中央部をインサート成形により支持したばね支持部２４を夫々設け、シールド部配設部位の上方に橋架配置されることで、可動接点ばね板２３Ａ，２３Ｂをシールド板１６Ａ，１６Ｂ間に配置するようになっている。
【００３２】
ここでカード４はベース１の両端側の側壁２５，２５の上端部に設けた支持部２２，２２により回動枢軸部２１が回動自在に支持されて橋架されるため、インサート成形によりばね支持部２４、２４に保持される可動接点ばね板２３Ａ，２３Ｂのベース１の上面に対する位置は高精度で設定されることになる。
【００３３】
回動枢軸部２１は図４（ａ）（ｂ）に示すように先部に正面断面が円形の軸部２１ａを形成するとともに、この軸部２１ａの背部に下部の正面断面が略逆三角形の回動支点部２１ｂを一体形成し、この回動支点部２１ｂの下端面を両側面にかけて円弧状の曲面としてその最下端位置を軸部２１ａの中心の高さ位置に一致させている。
【００３４】
一方、支持部２２は側壁２５の内側面に沿って形成されて上端面で回動支点部２１ｂを支持する支持台２２ａと、支持台２２ａに連続して側壁２５の上端部に形成され上端開放の角孔２２ｂとからなり、角孔２２ｂの両側内面間の距離を軸部２１ａの直径と同じとするとともに底部と上記回動支点部２１ｂの上端面の高さ位置までの距離を軸部２１ａの半径よりやや大きくし、軸部２１ａの下端と底部との間に隙間ができるようにしてあり、角孔２２ｂの両側内面と軸部２１ａとで左右方向のずれを防止し、また軸部２１ａを当接支持する角孔２２ｂの内面の高さ位置と支持台２２ａの高さ位置とを一致させている。
【００３５】
さてカード４の夫々のばね支持部２４にインサート成形により支持されている２枚の可動接点ばね板２３Ａ，２３Ｂは固定接点端子１９ａ〜１９ｃを結ぶ線の両側に偏倚配置されており、第１の可動接点ばね板２３Ａの両端部は中央の固定接点端子１９ａの固定接点２０の一面と、一端側の固定接点端子１９ｂの固定接点２０の一面とに対して夫々接触開離する可動接点を構成し、第２の可動接点ばね板２３Ｂの両端部は中央の固定接点端子１９ａの固定接点２０の他面と、他端側の固定接点端子１９ｂの固定接点２０の他面とに対して夫々接触開離する可動接点を構成するもので、これらの接触開離の動作はカード４の回動によって行われる。
【００３６】
シールド板１６Ａ，１６Ｂは夫々に近接する側の可動接点ばね板２３Ａ，２３Ｂのばね支持部２４を逃がすための逃げ部２６を中央から一端間の部位を反対方向へ曲げ加工により凹ませることで形成しており、この逃げ部２６両側のシールド板１６Ａ，１６Ｂの平坦面により可動接点ばね板２３Ａ，２３Ｂの両端部が固定接点２０より開離して移動したときに接触するアース接点部を構成する。
【００３７】
また各シールド板１６Ａ，１６Ｂは共に同じ形状であって、夫々２本のアース端子２７ａ，２７ｂを一体に形成している（図５、図６参照）。尚各シールド板１６Ａ、１６Ｂの夫々の端部から最も近いアース端子までの距離をアンテナ効果が生じないように開閉する信号の波長のλ／３０以下としている。
【００３８】
更にシールド板１６Ａ，１６Ｂはベース１に配設したときに固定接点端子１９ａと、１９ｂ又は１９ｃとの間に位置するように逃げ部２６の形成部位の一端にアース端子２７ａを形成しており、このアース端子２７ａは、逃げ部２６を形成する部位の一端部下端より内側方向に直角に折り曲げて、その先端がベース１に配設時に固定接点端子１８ａ〜１８ｃを結ぶ直線上に位置するように延長形成した幅広片２８ａの先端より更に下方に直角に折り曲げた垂下片２８ｂの下端部の一端から更に垂下延長した細幅の板片からなる。他方のアース端子２７ｂは逃げ部２６を形成する部位の他端近傍の逃げ部２６外の位置より内側方向に直角に折り曲げてその先端が、ベース１に配設時に固定接点端子１８ａ〜１８ｃを結ぶ直線上に位置するように延長形成した幅広片２８ａ’の先端より更に下方に直角に折り曲げた垂下片２８ｂ’の下端部の一端から更に垂下延長した細幅の板片からなる。
【００３９】
このように形成されたシールド板１６Ａ，１６Ｂは同形状であって、ベース１上に点対称的に配置することで、アース端子２７ａ、２７ｂを中央の固定接点端子１９ａと、端部の固定接点端子１９ｂ或いは１９ｃの間に配置することができるようになっている。
【００４０】
而してシールド板１６Ａ、１６Ｂをシールド部配設部位に配設する際には、それらの両端部の対向面を上述したようにリブ１７，１７の両側面に当接して位置決めするとともに、夫々の各アース端子２７ａ、２７ｂを一体形成している垂下片２８ｂ，２８ｂ’の幅に対応させてベース１に貫通させた挿通孔２９…を介して各アース端子２７ａ、２７ｂをベース１下面側に突出させるとともに垂下片２８ｂ又は２８ｂ’を挿通孔２９に挿入する。
【００４１】
そして上記のようにシールド板１６Ａ，１６Ｂをシールド部配設部位に配設した後に、ベース１の両端の側壁２５，２５の支持部２２にカード４の両端の回動枢軸部２１を回動自在に支持させてカード４をシールド部配設部位上方に橋架配設することで、可動接点ばね板２３Ａを固定接点端子１９ａ，１９ｂとシールド板１６Ａの逃げ部２６との間に、また可動接点ばね板２３Ｂを固定接点端子１９ａ、１９ｃとシールド板１６Ａの逃げ部２６との間に配置することができるのである。
【００４２】
カード４を橋架配設する場合は、側壁２５側の支持部２２の角孔２２ｂ内に上端開口より軸部２１ａを嵌めるとともに、支点台２２ａの上端面に回動支点部２１ｂを図７に示すように載置させることで、カード４はベース１の両端側壁間に橋架される。これにより角孔２２ｂと軸部２１ａとで水平方向の支持を、また支点台２２ａと回動支点部２１ｂとで上下方向の支持を分担し、且つ軸部２１ａの中心と支点台２２ａの上端面の位置を一致させることで１カ所で支持する場合に比べて確実に回動枢軸部２１を支持することができるようになっている。また軸部２１ａの下端が角孔２２ｂの底部より浮く状態にあるためベース１の成形時に発生するバリを逃がすことができる。
【００４３】
橋架配設したカード４は復帰ばね３１により常時シールド板１６Ａ方向に下部側面が押圧付勢される。この復帰ばね３１はベース１の側壁３６の片側内面に形成した圧入溝３２に基部３１ａを圧入し、基部３１ａの上部一端よりシールド板１６Ｂ方向へ延長形成したばね片３１ｂの先端をシールド板１６Ｂの上端より上方に位置するカード４の下部側面に弾接し、電磁石ブロック５が非励磁状態において、回動枢軸部２１を中心としてカード４を回動させて内側の可動接点ばね板２３Ａの両端部をシールド板１６Ａの逃げ部２６両端の近傍の板面に当接させ、外側の可動接点ばね板２３Ｂの両端部を固定接点端子１９ａ，１９ｃの固定接点２０，２０に接触させるようになっている。尚可動接点ばね板２３Ａ，２３Ｂの両端部の可動接点を構成する部位は二股に分割してある。
【００４４】
ここで図２（ａ）に示すように、ばね片３１ｂが押圧するカード４の側面部位の反対側の同じ位置にカード４の側面部位には接極子１２の他片１２ｂの先端が当接するようになっており、この当接部位及びばね片３１ｂの押圧部位が相対向して力のバランス（均衡）を図り、リレー動作が安定するようにしてある。また夫々の部位を図８に示すように側面より突出する凸部３３とし、ばね片３１ｂや他片１２ｂの当たる部分のずれを少なくして摩擦を防止している。
【００４５】
さてベース１に電磁石ブロック５，シールド板１６Ａ，１６Ｂ、固定接点端子１９ａ〜１９ｄ、可動接点ばね板２３Ａ，２３Ｂを含むカード４、接極子１２，ヒンジばね３，復帰ばね３１等のリレー機構部の部材を配設した後、復帰ばね３１やヒンジばね３のばね圧調整を行う場合には、これらばね３１，３が臨むベース１の側壁２５の開口２５ａや側壁３６の開口３６ａから容易に行うことができる。
【００４６】
ばね圧調整終了後ベース１の両端の側壁２５や両側の側壁３６を内部に収めるようにしてベース１にケース２を被着すれば、所望の高周波リレーが完成することになる。
【００４７】
尚ケース２の天井面には、カード４の上端面に２カ所設けてある凹み部３７に夫々がはまる１対の回動支持部３４を２組設けてある。夫々の対はケース２をベース１上に被着する際の両側方向が反対となってもケース２の長手（両端）方向の１対の回動支持部３４の下部が夫々に対応する凹み部３７にはまるようなっている。そしてカード４側の凹み部３７の底部の高さ位置は、上記回動枢軸部２１の回動支点部２１ｂの下端の位置と同じ高さ位置となっており、ケース２を被着したときに凹み部３７に回動支持部３４がはまり、ベース１側だけでなく、ケース２側からもカード３を回動自在に支持して、リレーの取付方向によらずカード４の回動動作を安定させ、高周波特性の安定化を図っている。尚凹み部３７の底部は回動支持部３４の下面に当接した状態でカード４が両側方向に回動できるような円弧面に形成してある。
【００４８】
次に上述のように構成された本実施形態の高周波リレーの動作を説明する。
【００４９】
まず電磁石ブロック１が非励磁の状態では、復帰ばね３１の付勢によりカード４は電磁石ブロック５側へ移動する方向に回動した状態にあり、可動接点ばね板２３Ａは両端部がシールド板１６Ａの内面にアース端子２７ａ、２７ｂを通じて接地される。
【００５０】
一方可動接点ばね板２３Ｂは両端部が固定接点端子１９ａ，１９ｃの固定接点２０、２０に接触して両固定接点端子１９ａ、１９ｃ間を導通させる。
【００５１】
次に電磁石ブロック５を励磁すると、鉄心８に接極子１２の一片１２ａが吸引され、接極子１２は回動する。この回動によりその他片１２ｂがカード４を押して、復帰ばね３１の付勢に抗して反電磁石ブロック５を方向に回動させる。この回動により可動接点ばね板２３Ｂは両端部が固定接点２０，２０から開離してシールド板１６Ｂの内面に接触してアース端子２７ａ、２７ｂを介して接地される。
【００５２】
一方可動接点ばね板２３Ａは両端部を固定接点端子１９ａ，１９ｂの固定接点２０、２０に接触して両固定接点端子１９ａ、１９ｂ間を導通させる。この状態が図２（ａ）の状態である。
【００５３】
電磁石ブロック５の励磁を止めると、復帰ばね３１の付勢によりカード４は下部が電磁石ブロック５側へ移動するように回動して、可動接点ばね板２３Ａの両端部がシールド板１６Ａの内面に接触し、可動接点ばね板２３Ｂの両端部が固定接点端子１９ａ，１９ｃの固定接点２０、２０に接触する状態に戻る。
（実施形態２）
上記実施形態１の回動枢軸部２１は図４（ａ）（ｂ）に示すように先部に正面断面が円形の軸部２１ａを形成するとともに、この軸部２１ａの背部に下部の正面断面が略逆三角形の回動支点部２１ｂを一体形成し、この回動支点部２１ｂの下端面を両側面にかけて円弧状の曲面としてその最下端位置を軸部２１ａの中心の高さ位置に一致させる構成としてあるが、軸部２１ａの回転支点部２１ｂに対する連結部分は回転支点部２１ｂに重なる部分のみであるため、強度的に弱く折損する恐れがあった。
【００５４】
そこで本実施形態では、軸部２１ａの断面を円形とせず、図９に示すように上記実施形態１における軸部２１ａの円形部分を上下２分する位置よりもやや上方の周面と下部が一体で上面がカード４の上面と同じ高さとなった補強リブ２１ｃを軸部２１ａの端面位置から回転支持部２１ｂの端面位置に至るまで一体形成し、軸部２１ａの強度を強めている。尚補強リブ２１ｃの両側側面を内向きに傾斜させ、回転支点部２１ｂによるカード４の回転動作に支障を与えないようにしてある。
【００５５】
強度補強を図るための補強リブ２１ｃを、図のように軸部２１ａの頂点部位において、軸部２１ａの端面から回転支持面２１ｂの端面位置に至るまで一体形成しても良い。
【００５６】
尚その構成は実施形態１と同じ構成であるため、ここでは特に図示しない。
（実施形態３）
本実施形態に用いるカード４は、成形する際において、成形されたカード４に残るゲート跡Ｘが図１１に示すようにカード４の中心で且つ復帰ばねの配置位置よりも上方の位置となるようにゲートが設けられた成形金型を用いて成形されている。
【００５７】
従って、本実施形態におけるカード４は成形樹脂の充填が左右両側とも安定した合成樹脂成形品より構成され、またゲート跡Ｘの凸部が復帰ばね３１に当たらず、動作が安定した高周波リレーを実現できる。
【００５８】
尚本実施形態では回転枢軸部２１の構成を実施形態２の図９の構成を採用し、また可動接点ばね板２３Ａは先端の可動接点部位の幅をその他の部位に比して広幅としてある。
【００５９】
その他の構成は実施形態１と同じ構成であるため、図１１において実施形態１と同じ構成には同じ符号を付し、また図示された構成の説明は実施形態１の説明を参照する。
【００６０】
【発明の効果】
請求項１の発明は、アース端子に電気的接続されたアース接点部及び固定接点端子の固定接点部を配置したシールド空間をベース上に設け、該シールド空間内に、固定接点部に対して接触開離自在で且つ固定接点部から開離しているときにアース接点部に接触するように可動接点ばね板を配置するとともに、該可動接点ばね板を支持しているカードを駆動する電磁石ブロックをシールド空間外のベースに配設し、ベースの上面側におけるシールド空間の両端側に一対の側壁を立設した高周波リレーにおいて、ベースの各側壁の上端には、両側壁が並ぶ方向におけるカードの両端部に設けた回動枢軸部を回動自在に枢支してカードをシールド空間上方に橋架配置する支持手段が形成され、回動枢軸部は先部に正面断面が円形の軸部を備えるとともに、軸部の背部に下部の正面断面が逆三角形であって下端を軸部の中心の高さ位置に一致させた回動支点部を一体に備え、支持手段は側壁の上端面で回動支点部の下端に当接する支点台と、支点台に連続して側壁の上端部に形成され上端開放であって両側内面に軸部外面を回動自在に接面させる角孔とからなるので、カードのベースに対する高さ方向の精度を高精度とすることができ、そのためシールド空間の底部と可動接点ばね板の下端との距離を小さくすることが可能となり、その結果シールド空間に臨む固定接点端子の部位を短くすることができるため、固定接点端子の垂直度の精度を高くすることができ、結果高周波特性が安定化するという効果がある。またリレーの低背が可能となり、サーフェースマント型リレーも端子間距離だけで対応できるという効果がある。さらにまた、回動支点部の下端を軸部の中心の高さ位置に一致させたので、カードの回動枢軸部の安定した支持が行え、更に高周波特性の安定化が図れる。また、支点台が回動支点部の下端に当接することにより、カードのベースに対する上下方向の位置の精度が向上し、結果カードに支持された可動接点ばね板の位置の精度もより向上し、高周波特性を一層安定化することができる。さらに、両側内面に軸部外面を回動自在に接面させる角孔を設けたので、カードのベースに並行する位置の精度が向上し、結果カードに支持された可動接点ばね板の位置の精度もより向上し、高周波特性の安定化が一層図れる。
【００６４】
請求項２の発明は、請求項１の発明において、上記軸部の断面円形部分を上下２分する位置よりも上方の周面に下部が一体となり、上面がカードの上面と同じ高さとなった補強リブを軸部の全長に亘って一体形成したので、また請求項３の発明は、請求項１の発明において、上記軸部の頂部に下部が一体となり、上面がカードの上面と同じ高さとなった補強リブを軸部の全長に亘って一体形成したので、軸部の強度を強くすることができ、軸部の折損が起きにくく高い信頼性を得ることができる。
【００６５】
請求項４の発明は、請求項１乃至３の何れかの発明において、前記角孔の底部と、前記軸部の下端との間に隙間を設けてあるので、成形材のばりの逃げが確保でき、カードの動作が確実となる。
【００６６】
請求項５の発明は、請求項１乃至４の何れかの発明において、前記ベース上に被着するケースの天井面に該カード側へ突出せる回動支持部を設け、前記ケースの天井面側に対向する前記カードの部位に、前記回動支持部がはまって該回動支持部のカード側の面で底部がカード自体の回転可能なように支持される凹み部を設けたので、リレーの取付方向によらず、カードの動作が安定し、高周波特性の安定化に寄与する。
【００６７】
請求項６の発明は、請求項１乃至５の何れかの発明において、前記電磁石ブロックに備えられ、電磁石ブロックの励磁時に吸引されて動作する接極子により押される前記カードの位置と、電磁石ブロックの非励磁時に、前記カードを所定の位置へ復帰させる復帰ばねにより押される前記カードの位置とが該カードを挟復帰ばね及び接極子がカードを押す位置が一致することになり、その結果力のバランスが良くなって安定した動作が得られ、高周波特性の安定化を一層図れる。
請求項７の発明は、請求項６の発明において、上記カードが、成形のゲート跡が中心で且つ上記復帰ばねの配置位置よりも上方の位置となるようにゲートが設けられた成形金型を用いて成形された合成樹脂成形品からなるので、成形樹脂の充填が左右両側とも安定した合成樹脂成形品によりカードが構成され、またゲート跡の凸部が復帰ばねに当たらず、動作が安定した高周波リレーを実現できる。
【図面の簡単な説明】
【図１】本発明の実施形態１の分解斜視図である。
【図２】（ａ）は同上の平面断面図である。
（ｂ）は（ａ）のＡ−Ａ断面矢視図である。
【図３】（ａ）は同上に用いるベースの上面図である。
（ｂ）は同上に用いるベースの正面断面図である。
（ｃ）は同上に用いるベースの正面図である。
（ｄ）は同上に用いるベースの側面断面図である。
【図４】（ａ）は同上の要部の一部省略せる拡大断面図である。
（ｂ）は同上の要部の一部省略せる拡大正面図である。
【図５】（ａ）は同上の一方のシールド板の正面図である。
（ｂ）は同上の他方のシールド板の正面図である。
【図６】同上のシールド板の構成説明図である。
【図７】同上のカードの回動枢軸部の支持部位の説明図である。
【図８】同上のカードの側面図である。
【図９】本発明の実施形態２の要部の説明図である。
【図１０】同上の他の例の要部の説明図である。
【図１１】本発明の実施形態３に用いるカードの拡大正面図である。
【図１２】一従来例の分解斜視図である。
【図１３】（ａ）の同上のケースを外した状態の平面図である。
（ｂ）は同上の正面断面図である。
【符号の説明】
１ベース
２ケース
３ヒンジばね
４カード
５電磁石ブロック
１２接極子
１５隔壁
１６Ａ，１６Ｂシールド板
１９ａ〜１９ｃ固定接点端子
２１回動枢軸部
２２回動支持部
２３Ａ，２３Ｂ可動接点ばね板
２６逃げ部
１７ａ、１７ｂアース端子[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high frequency relay.
[0002]
[Prior art]
As a conventional high frequency relay, there is one having a structure shown in FIG.
[0003]
In this conventional example, a base 100 on which a relay mechanism is disposed, a case 101 attached to the base 100, an electromagnetic block 105 including a yoke 102, a coil 103, and an iron core 104, a card block 106, a shield, It is composed of a box 107, movable contact springs 108, 108 provided on the card block 106 side, fixed contact terminals 109a to 109d, and the like. The shield box 107 is bent and punched from a single metal plate. The box portion and the ground terminals 110 are integrally formed.
[0004]
In the card block 106 of this conventional example, a pair of armatures 114, 114 each having a permanent magnet 113 interposed in a through hole provided at one end in the longitudinal direction of a substantially rectangular parallelepiped card 112 is disposed. Is positioned between one magnetic pole surface of the iron core 104 of the electromagnet block 105 and the tip of one end of the yoke 102, and the other magnetic pole surface of the iron core 104 of the other contact 114 and the other end of the yoke 102. It is the structure mounted on the electromagnet block 105 so that it may be located between the front-end | tip parts on the side.
[0005]
FIGS. 13A and 13B show a plan view and a front sectional view of the conventional case with the case 101 removed. As can be seen from FIG. It is in a state of being suspended by the balance spring 115.
[0006]
[Problems to be solved by the invention]
By the way, in the above conventional example, the card 112 of the card block 106 is in a state of being suspended by the balance spring 115, so that there is a problem that it is difficult to obtain the height accuracy.
[0007]
Therefore, in this conventional example, there is a problem that the distance H between the bottom of the shield box 107 and the movable contact spring plate 108 cannot be reduced, and it is difficult to match the high frequency signal flowing in the circuit.
[0008]
In addition, the lengths of the fixed contact terminals 109a to 109c have to be increased. As a result, the accuracy of the perpendicularity of the fixed contact terminals 109a to 109c is lowered, resulting in a variation in high frequency characteristics.
[0009]
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a high-frequency relay in which the movable contact spring plate can be arranged with high accuracy and stable in high-frequency characteristics. There is to do.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, a shield space in which the ground contact portion electrically connected to the ground terminal and the fixed contact portion of the fixed contact terminal are disposed is provided on the base, and the shield space contacts the fixed contact portion. A movable contact spring plate is disposed so as to come into contact with the ground contact portion when it is separable and separated from the fixed contact portion, and the electromagnetic block that drives the card that supports the movable contact spring plate is shielded. In a high-frequency relay that is disposed on a base outside the space and has a pair of side walls erected on both ends of the shield space on the upper surface side of the base, both ends of the card in the direction in which both side walls are aligned are located at the upper end of each side wall of the base. the rotating pivot portion provided in part by pivotally supported support means for bridging place the card in the upper shield space is formed, rotating pivot portion when the front section to the tip portion comprises a shank of circular In addition, a rotating fulcrum part is integrally provided on the back part of the shaft part, with the lower front cross section being an inverted triangle and the lower end being matched to the height position of the center of the shaft part. A fulcrum base that abuts the lower end of the moving fulcrum part, and a square hole that is formed at the upper end part of the side wall continuously from the fulcrum base and that is open at the upper end and that allows the outer surface of the shaft part to freely contact the inner surface of both sides. It is characterized by.
[0014]
In the invention of claim 2, in the invention of claim 1, the lower is integral with the circumferential surface of the upper side than the position of the circular section part of the shaft portion vertically 2 minutes, the top surface becomes the same height as the upper surface of the card The reinforcing rib is integrally formed over the entire length of the shaft portion.
[0015]
According to a third aspect of the present invention, in the first aspect of the present invention, a reinforcing rib having a lower portion integrated with the top portion of the shaft portion and an upper surface having the same height as the upper surface of the card is integrally formed over the entire length of the shaft portion. It is characterized by.
[0016]
According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, a gap is provided between a bottom portion of the square hole and a lower end of the shaft portion.
[0017]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a rotation support portion that protrudes toward the card side is provided on the ceiling surface of the case that is attached on the base, and the ceiling surface side of the case wherein a portion of said card that faces, the bottom in terms of the card side of the pivot support portion is fitted the pivoting support portion is provided with a concave viewed portion which is rotatably supported by the card itself And
[0018]
The invention of claim 6, in any one of the claims 1 to 5, provided before Symbol electromagnet block, and the position of the card pressed by the armature that operates sucked upon excitation of the electromagnet block, the electromagnet block At the time of non-excitation, the position of the card pushed by a return spring that returns the card to a predetermined position is set to a position facing the card.
[0019]
According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the card is a molding die in which a gate is provided so that the molding gate mark is at the center and is positioned above the position where the return spring is disposed. It consists of a synthetic resin molded product molded by using.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to an embodiment.
[0021]
In this embodiment, as shown in FIGS. 1 and 2, a base 1 made of a synthetic resin molding material, a relay mechanism portion disposed on the base 1, and a box made of a synthetic resin molding agent to be attached to the base 1. It is comprised with the shape case 2. FIG.
[0022]
The electromagnet block 5 which is a main configuration of the relay mechanism section includes a coil bobbin 7 around which an exciting coil 6 is wound, an iron core 8 inserted through a central through hole of the coil bobbin 7, and an iron core 8 viewed on one end side of the coil bobbin 7. One end is caulked and fixed to the tip plate surface, and the yoke 9 is formed by bending the tip of the bent piece parallel to the coil bobbin 7 and extending the tip of the bent piece to the other end side of the coil bobbin 7.
[0023]
The electromagnet block 5 is arranged on the base 1 so that the lower portions of the coil terminals 10 and 10 provided on the coil bobbin 7 protrude toward the lower surface side of the base 1 from the insertion holes 11 provided in the base 1 as shown in FIG. .
[0024]
The armature 12 that is attracted and driven when the electromagnet block 5 is excited is formed of an iron piece bent in an L shape, and one piece 12a is opposed to the other end of the iron core 8 exposed on the other end side of the coil bobbin 7 and its bent portion. Is arranged so as to be able to turn freely on the tip of the bent piece of the yoke 9. Further, the tip of the other piece 12b is brought into contact with the side surface of the card 4 to be described later.
[0025]
The hinge spring 3 is disposed by press-fitting the lower portion into a press-fit groove 14 formed in the lower portion 13 of the side wall 25 provided at one end portion on the base 1 on the side where the armature 12 is disposed, and obliquely intersects from the upper side of one side end. In addition, the outer corner of the bent portion of the armature 12 is pressed by the tip portion of the presser piece 3a formed to extend, and the inner corner of the armature 12 is pressed against the yoke 9 and held.
[0026]
On one side of the base 1 parallel to the location of the electromagnet block 5, the partition 15 is separated from the location of the electromagnet block 5 by the partition 15, and is surrounded by the side wall 36 on one side of the partition 15 and the base 1 and the side walls 25 on both ends. The space above the base 1 is used as an arrangement site for the shield part including the contact part.
[0027]
This shield part is composed of two shield plates 16A, 16B arranged in parallel, and is shown on the base 1 as shown in FIG. The opposite surfaces of both end portions of the shield plates 16A and 16B are disposed on both side surfaces of the ribs 17 formed as described above.
[0028]
The ribs 17 are used for positioning the shield plates 16A and 16B of the base 1, and the positions of the shield plates 16A and 16B are determined by the molding accuracy of the ribs 17, and on the opposite surface side of the shield plates 16A and 16B. Is not affected by variations in the thickness of the shield plates 16A and 16B, so that the distance between the plate surfaces inside the shield plates 16A and 16B can be set with high accuracy.
[0029]
As shown in FIG. 3A, a position corresponding to the center position of the shield plates 16A and 16B and a position in the vicinity of the ribs 17 are respectively provided on the center line that bisects the space between the shield plates 16A and 16B. The fixed contact terminals 19a, 19b and 19c are respectively penetrated through the holes 18 so that the fixed contacts 20 of the respective fixed contact terminals 19a to 19c face the space surrounded by the shield plates 16A and 16B. .
[0030]
Here, at the upper end of each side wall 25 of the base 1 on both ends of the shield part, the pivot 4 is provided on both ends of the card 4 driven by the armature 12 to support the card 4. Support portions (support means) 22 and 22 are formed so as to bridge the shield portion above the shield portion.
[0031]
The card 4 has less influence on the impedance of the movable contact spring plates 23A and 23B, and in order to easily match the characteristic impedance, a synthetic resin such as Teflon (dielectric constant 2.0) close to the dielectric constant of air. It consists of a molded product using a molding material, and the pivot shaft 21 is integrally formed on both upper and lower end faces, and the spring support portions 24 that support the center of the movable contact spring plates 23A and 23B by insert molding are formed on both lower ends. The movable contact spring plates 23A and 23B are arranged between the shield plates 16A and 16B by providing the bridges and arranging the bridges above the shield portion arrangement portions, respectively.
[0032]
Here, since the card 4 rotating pivot portion 21 by the supporting lifting portions 22 provided at the upper end of the side wall 25, 25 of both end sides of the base 1 is bridged and is supported rotatably, the spring by insert molding The positions of the movable contact spring plates 23A and 23B held by the support portions 24 and 24 with respect to the upper surface of the base 1 are set with high accuracy.
[0033]
As shown in FIGS. 4 (a) and 4 (b), the rotary pivot portion 21 has a shaft portion 21a having a circular front cross section at the front portion, and a lower front cross section at the back portion of the shaft portion 21a. The rotation fulcrum portion 21b is integrally formed, and the lower end surface of the rotation fulcrum portion 21b is formed as an arcuate curved surface on both side surfaces so that the lowermost end position thereof coincides with the center height position of the shaft portion 21a.
[0034]
On the other hand, supporting lifting portion 22 is formed on the upper end of the side wall 25 contiguous with the support table 22a for supporting the pivot part 21b at the upper end face is formed along the inner surface of the side wall 25, a support base 22a upper end The angle between the inner surfaces of both sides of the square hole 22b is the same as the diameter of the shaft portion 21a, and the distance from the bottom portion to the height position of the upper end surface of the rotation fulcrum portion 21b is the shaft portion. 21a is slightly larger than the radius of the shaft 21a so that a gap is formed between the lower end and the bottom of the shaft portion 21a. The lateral inner surface of the square hole 22b and the shaft portion 21a are prevented from shifting in the left-right direction. The height position of the inner surface of the square hole 22b that abuts and supports 21a is made to coincide with the height position of the support base 22a.
[0035]
Now, the two movable contact spring plates 23A and 23B supported by insert molding on the respective spring support portions 24 of the card 4 are biased and arranged on both sides of the line connecting the fixed contact terminals 19a to 19c. Both end portions of the movable contact spring plate 23A constitute a movable contact that contacts and separates from one surface of the fixed contact 20 of the center fixed contact terminal 19a and one surface of the fixed contact terminal 19b of one end side. The both ends of the second movable contact spring plate 23B are in contact with the other surface of the fixed contact 20 of the central fixed contact terminal 19a and the other surface of the fixed contact 20 of the other fixed contact terminal 19b. The movable contacts are separated, and the contact breaking operation is performed by the rotation of the card 4.
[0036]
The shield plates 16A and 16B are formed by indenting a relief portion 26 for releasing the spring support portion 24 of the movable contact spring plates 23A and 23B on the adjacent sides thereof by bending a portion between one end from the center in the opposite direction. The flat surfaces of the shield plates 16A and 16B on both sides of the escape portion 26 constitute an earth contact portion that contacts when both end portions of the movable contact spring plates 23A and 23B move away from the fixed contact 20 and move.
[0037]
The shield plates 16A and 16B have the same shape, and two ground terminals 27a and 27b are integrally formed (see FIGS. 5 and 6). Note that the distance from the end of each shield plate 16A, 16B to the nearest ground terminal is set to λ / 30 or less of the wavelength of the signal to be opened and closed so that the antenna effect does not occur.
[0038]
Further, when the shield plates 16A and 16B are disposed on the base 1, a ground terminal 27a is formed at one end of the formation portion of the relief portion 26 so as to be positioned between the fixed contact terminal 19a and 19b or 19c. The ground terminal 27a is bent at a right angle inward from the lower end of one end of the portion where the relief portion 26 is formed, and its tip is positioned on a straight line connecting the fixed contact terminals 18a to 18c when disposed on the base 1. It consists of a narrow-width plate piece that extends further from one end of the lower end portion of the hanging piece 28b that is bent at a right angle further downward than the tip of the extended wide piece 28a. The other ground terminal 27b is bent at a right angle inward from the position outside the escape portion 26 near the other end of the portion where the escape portion 26 is formed, and the tip thereof connects the fixed contact terminals 18a to 18c when disposed on the base 1. It consists of a narrow-width plate piece extending further from one end of the lower end portion of the hanging piece 28b 'bent at a right angle further downward than the tip of the wide piece 28a' formed so as to be positioned on a straight line.
[0039]
The shield plates 16A and 16B thus formed have the same shape, and are arranged point-symmetrically on the base 1 so that the ground terminals 27a and 27b are connected to the central fixed contact terminal 19a and the fixed contact at the end. It can be arranged between the terminals 19b or 19c.
[0040]
Thus, when the shield plates 16A and 16B are disposed at the shield portion disposition site, the opposing surfaces of both ends thereof are positioned in contact with both side surfaces of the ribs 17 and 17 as described above, respectively. The ground terminals 27a and 27b are formed on the lower surface side of the base 1 through insertion holes 29 penetrating the base 1 in correspondence with the width of the hanging pieces 28b and 28b 'integrally forming the ground terminals 27a and 27b. The hanging piece 28b or 28b ′ is inserted into the insertion hole 29 while protruding.
[0041]
The rotating shield plate 16A as described above, after providing the 16B to shield portion arranged position, the ends of the rotating pivot portions 21 of the card 4 to the supporting lifting portion 22 of the side walls 25, 25 at both ends of the base 1 By freely supporting the card 4 and arranging the bridge 4 above the shield portion, the movable contact spring plate 23A is placed between the fixed contact terminals 19a and 19b and the relief portion 26 of the shield plate 16A, and the movable contact. The spring plate 23B can be disposed between the fixed contact terminals 19a and 19c and the escape portion 26 of the shield plate 16A.
[0042]
If you bridge disposed the card 4, together with fitting the shaft portion 21a from the upper end opening into the square hole 22b supporting region 22 of the side wall 25 side, the pivot point 21b on the upper end surface of the pivot base 22a in FIG. 7 The card 4 is bridged between both side walls of the base 1 by being placed as shown. Thus the support of the horizontal direction in the square hole 22 b and the shaft portion 21a, also share the support in the vertical direction with the fulcrum block 22a and the pivot point 21b, and on the center of the shaft portion 21a and the fulcrum block 22a By matching the positions of the end faces, the rotation pivot 21 can be reliably supported as compared with the case where the end surfaces are supported at one place. Further, since the lower end of the shaft portion 21a is in a state of floating from the bottom portion of the square hole 22b, burrs generated when the base 1 is molded can be released.
[0043]
The card 4 arranged in the bridge is always pressed and biased by the return spring 31 in the direction of the shield plate 16A. The return spring 31 press-fits a base 31a into a press-fit groove 32 formed on one side inner surface of the side wall 36 of the base 1, and the tip of a spring piece 31b formed extending from the upper end of the base 31a toward the shield plate 16B is formed on the shield plate 16B. The card 4 is elastically contacted to the lower side surface of the card 4 located above the upper end, and the electromagnet block 5 is in a non-excited state so that the card 4 is rotated around the rotation pivot 21 to connect both end portions of the inner movable contact spring plate 23A. The shield plate 16A is brought into contact with the plate surface in the vicinity of both ends of the escape portion 26, and both end portions of the outer movable contact spring plate 23B are brought into contact with the fixed contacts 20, 20 of the fixed contact terminals 19a, 19c. In addition, the site | part which comprises the movable contact of the both ends of movable contact spring board 23A, 23B is divided | segmented into the fork.
[0044]
Here, as shown in FIG. 2A, the tip of the other piece 12b of the armature 12 is brought into contact with the side surface portion of the card 4 at the same position opposite to the side surface portion of the card 4 pressed by the spring piece 31b. The contact part and the pressing part of the spring piece 31b are opposed to each other so as to balance the force and stabilize the relay operation. Further, as shown in FIG. 8, each portion is formed as a convex portion 33 protruding from the side surface, so that friction between the spring piece 31 b and the other piece 12 b is reduced to prevent friction.
[0045]
The base 1 has a relay mechanism such as an electromagnetic block 5, shield plates 16A and 16B, fixed contact terminals 19a to 19d, a card 4 including movable contact spring plates 23A and 23B, an armature 12, a hinge spring 3 and a return spring 31. When the spring pressure of the return spring 31 and the hinge spring 3 is adjusted after the members are disposed, it is easily performed from the opening 25a of the side wall 25 of the base 1 and the opening 36a of the side wall 36 where the springs 31 and 3 face. Can do.
[0046]
If the case 2 is attached to the base 1 so that the side walls 25 on both ends and the side walls 36 on both sides of the base 1 are accommodated inside after the spring pressure adjustment is completed, a desired high frequency relay is completed.
[0047]
Note that two sets of a pair of rotation support portions 34 are provided on the ceiling surface of the case 2 so that the recesses 37 are provided at two locations on the upper end surface of the card 4. Each pair is a recess in which the lower part of the pair of rotation support portions 34 in the longitudinal (both ends) direction of the case 2 corresponds to each other even when both side directions when the case 2 is attached to the base 1 are reversed. 37. And the height position of the bottom part of the recessed part 37 by the side of the card | curd 4 is the same height position as the position of the lower end of the rotation fulcrum part 21b of the said rotation pivot part 21, When the case 2 is attached A rotation support portion 34 is fitted in the recessed portion 37, and the card 3 is supported not only from the base 1 side but also from the case 2 side, so that the rotation operation of the card 4 can be stabilized regardless of the relay mounting direction. To stabilize the high-frequency characteristics. The bottom of the recessed portion 37 is formed in an arcuate surface that allows the card 4 to turn in both directions in contact with the lower surface of the turning support portion 34.
[0048]
Next, the operation of the high frequency relay of the present embodiment configured as described above will be described.
[0049]
First, when the electromagnet block 1 is in a non-excited state, the card 4 is rotated in the direction of moving toward the electromagnet block 5 by the urging of the return spring 31, and the movable contact spring plate 23A has both ends of the shield plate 16A. The inner surface is grounded through ground terminals 27a and 27b.
[0050]
On the other hand, both end portions of the movable contact spring plate 23B come into contact with the fixed contacts 20 and 20 of the fixed contact terminals 19a and 19c to conduct between the fixed contact terminals 19a and 19c.
[0051]
Next, when the electromagnet block 5 is excited, the piece 12a of the armature 12 is attracted to the iron core 8, and the armature 12 rotates. Due to this rotation, the other piece 12b pushes the card 4 and rotates the counter electromagnet block 5 in the direction against the bias of the return spring 31. By this rotation, both ends of the movable contact spring plate 23B are separated from the fixed contacts 20 and 20 and contact the inner surface of the shield plate 16B, and are grounded via the ground terminals 27a and 27b.
[0052]
On the other hand, the movable contact spring plate 23A is brought into contact with the fixed contacts 20 and 20 of the fixed contact terminals 19a and 19b at both ends to conduct between the fixed contact terminals 19a and 19b. This state is the state of FIG.
[0053]
When the excitation of the electromagnet block 5 is stopped, the card 4 rotates so that the lower part moves to the electromagnet block 5 side by the urging of the return spring 31, and both end portions of the movable contact spring plate 23A are brought into contact with the inner surface of the shield plate 16A. The both ends of the movable contact spring plate 23B come into contact with the fixed contacts 20, 20 of the fixed contact terminals 19a, 19c.
(Embodiment 2)
As shown in FIGS. 4 (a) and 4 (b), the rotary pivot portion 21 of the first embodiment forms a shaft portion 21a having a circular front cross section at the front portion, and a lower front cross section at the back portion of the shaft portion 21a. Is formed integrally with a rotating fulcrum portion 21b having a substantially inverted triangle, and the lower end surface of the rotating fulcrum portion 21b is formed on both sides to form an arcuate curved surface so that its lowermost end position coincides with the height position of the center of the shaft portion 21a. Although it is configured, since the connecting portion of the shaft portion 21a to the rotation fulcrum portion 21b is only a portion overlapping the rotation fulcrum portion 21b, there is a possibility that the shaft portion 21a is weak in strength and breaks.
[0054]
Therefore, in the present embodiment, the cross section of the shaft portion 21a is not circular, and as shown in FIG. 9, the peripheral surface and the lower portion are slightly higher than the position where the circular portion of the shaft portion 21a in the first embodiment is vertically divided into two. Then, the reinforcing rib 21c whose upper surface is the same height as the upper surface of the card 4 is integrally formed from the end surface position of the shaft portion 21a to the end surface position of the rotation support portion 21b, thereby increasing the strength of the shaft portion 21a. Note that both side surfaces of the reinforcing rib 21c are inclined inward so as not to hinder the rotation operation of the card 4 by the rotation fulcrum portion 21b.
[0055]
The reinforcing rib 21c for reinforcing the strength may be integrally formed from the end surface of the shaft portion 21a to the end surface position of the rotation support surface 21b at the apex portion of the shaft portion 21a as shown in the drawing.
[0056]
Since the configuration is the same as that of the first embodiment, it is not particularly shown here.
(Embodiment 3)
When the card 4 used in the present embodiment is molded, the gate trace X remaining on the molded card 4 is positioned at the center of the card 4 and above the position where the return spring is disposed as shown in FIG. It is molded using a molding die provided with a gate.
[0057]
Therefore, the card 4 in the present embodiment is formed of a synthetic resin molded product in which the filling of the molding resin is stable on both the left and right sides, and the convex portion of the gate trace X does not hit the return spring 31 to realize a stable high frequency relay. it can.
[0058]
In the present embodiment, the configuration of the rotary pivot portion 21 is the same as that shown in FIG. 9 of the second embodiment, and the movable contact spring plate 23A has a wider movable contact portion at the tip than the other portions.
[0059]
Since the other configuration is the same as that of the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals in FIG. 11, and the description of the illustrated configuration is referred to the description of the first embodiment.
[0060]
【The invention's effect】
According to the first aspect of the present invention, a shield space in which a ground contact portion electrically connected to the ground terminal and a fixed contact portion of the fixed contact terminal are arranged is provided on the base, and the shield space contacts the fixed contact portion. A movable contact spring plate is disposed so as to come into contact with the ground contact portion when it is separable and separated from the fixed contact portion, and the electromagnetic block that drives the card that supports the movable contact spring plate is shielded. In a high-frequency relay that is disposed on a base outside the space and has a pair of side walls erected on both ends of the shield space on the upper surface side of the base, both ends of the card in the direction in which both side walls are aligned are located at the upper end of each side wall of the base. A support means for pivotally supporting the pivoting pivot provided on the part to bridge the card above the shield space is formed, and the pivoting pivot is provided with a shaft having a circular front section at the front. When In addition, the back portion of the shaft portion is integrally provided with a rotation fulcrum portion whose lower front cross section is an inverted triangle and whose lower end coincides with the height position of the center of the shaft portion, and the support means rotates on the upper end surface of the side wall. Because it consists of a fulcrum stand that contacts the lower end of the fulcrum part, and a square hole that is formed at the upper end part of the side wall that is continuous with the fulcrum part and that is open at the upper end and that allows the outer surface of the shaft part to turn freely on both side inner surfaces The accuracy in the height direction with respect to the base of the card can be made high, so that the distance between the bottom of the shield space and the lower end of the movable contact spring plate can be reduced. As a result, the fixed contact terminal facing the shield space Therefore, the accuracy of the perpendicularity of the fixed contact terminal can be increased, resulting in the effect of stabilizing the high frequency characteristics. In addition, the relay can be reduced in height, and the surface cloak type relay can be handled only by the distance between terminals. Furthermore, since the lower end of the rotation fulcrum portion is made coincident with the height position of the center of the shaft portion, the rotation pivot portion of the card can be stably supported, and the high frequency characteristics can be further stabilized. In addition, since the fulcrum stand abuts the lower end of the pivot fulcrum portion, the accuracy of the vertical position relative to the base of the card is improved, and as a result, the accuracy of the position of the movable contact spring plate supported by the card is further improved. High frequency characteristics can be further stabilized. In addition, the square holes that allow the outer surface of the shaft to rotate freely contact each other on the inner surfaces of both sides, improving the accuracy of the position parallel to the base of the card, and consequently the accuracy of the position of the movable contact spring plate supported by the card. In addition, the high frequency characteristics can be further stabilized.
[0064]
The invention of claim 2 is in the invention according to the first, lower is integral with the circumferential surface of the upper side than the position of the circular section part of the shaft portion vertically 2 minutes, the top surface becomes the same height as the upper surface of the card Since the reinforcing rib is integrally formed over the entire length of the shaft portion, the invention of claim 3 is the invention of claim 1 , in which the lower portion is integrated with the top portion of the shaft portion, and the upper surface is the same height as the upper surface of the card. Since the reinforcing rib thus formed is integrally formed over the entire length of the shaft portion, the strength of the shaft portion can be increased, and the shaft portion can be prevented from being broken and high reliability can be obtained.
[0065]
According to a fourth aspect of the present invention, there is provided a gap between the bottom of the square hole and the lower end of the shaft portion in any of the first to third aspects of the invention. Yes, the operation of the card is ensured.
[0066]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a rotation support portion that protrudes toward the card side is provided on a ceiling surface of a case that is deposited on the base, and a ceiling surface side of the case is provided. the portion of the card opposite, since the bottom in terms of the card side of the pivot support portion is fitted the pivoting support portion is provided with a concave viewed portion which is rotatably supported by the card itself, the relay Regardless of the mounting direction of the card, the operation of the card is stabilized, contributing to the stabilization of the high frequency characteristics.
[0067]
According to a sixth aspect of the invention, in any one of the claims 1 to 5, provided before Symbol electromagnet block, and the position of the card pressed by the armature that operates sucked upon excitation of the electromagnet block, the electromagnet block At the time of non-excitation, the position of the card pushed by the return spring that returns the card to a predetermined position coincides with the position where the return spring and the armature push the card. balance is made to obtain stable operation well, Ru more Hakare stabilization of high frequency characteristics.
A seventh aspect of the present invention is the molding die according to the sixth aspect of the present invention, wherein the card is provided with a gate so that the gate trace of the molding is at the center and is positioned above the position where the return spring is disposed. The card is composed of a synthetic resin molded product with stable molding resin filling on both the left and right sides, and the convex part of the gate trace does not hit the return spring, making the operation stable. A high frequency relay can be realized.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a first embodiment of the present invention.
FIG. 2A is a plan sectional view of the same.
(B) is an AA cross-sectional arrow view of (a).
FIG. 3A is a top view of a base used in the above.
(B) is front sectional drawing of the base used for the same as the above.
(C) is a front view of the base used in the above.
(D) is side sectional drawing of the base used for the same as the above.
FIG. 4A is an enlarged cross-sectional view in which a part of the main part is omitted.
(B) is an enlarged front view in which a part of the main part is omitted.
FIG. 5 (a) is a front view of one shield plate of the same.
(B) is the front view of the other shield board same as the above.
FIG. 6 is an explanatory diagram of the configuration of the shield plate same as above.
FIG. 7 is an explanatory view of a support portion of a rotation pivot portion of the card of the above.
FIG. 8 is a side view of the card.
FIG. 9 is an explanatory diagram of a main part of the second embodiment of the present invention.
FIG. 10 is an explanatory diagram of a main part of another example of the above.
FIG. 11 is an enlarged front view of a card used in Embodiment 3 of the present invention.
FIG. 12 is an exploded perspective view of a conventional example.
FIG. 13 is a plan view showing a state in which the same case as in (a) is removed.
(B) is front sectional drawing of the same as the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 Case 3 Hinge spring 4 Card 5 Electromagnet block 12 Armature 15 Bulkhead 16A, 16B Shield plates 19a-19c Fixed contact terminal 21 Rotating pivot portion 22 Rotating support portion 23A, 23B Movable contact spring plate 26 Escape portion 17a, 17b Ground terminal

Claims

A shield space in which a ground contact portion electrically connected to the ground terminal and a fixed contact portion of the fixed contact terminal are arranged is provided on the base, and the fixed contact portion can be freely opened and closed in the shield space. The movable contact spring plate is arranged so as to come into contact with the ground contact portion when it is separated from the portion, and an electromagnet block for driving the card supporting the movable contact spring plate is arranged on the base outside the shield space. In the high-frequency relay in which a pair of side walls are erected on both end sides of the shield space on the upper surface side of the base, the pivots provided at both ends of the card in the direction in which both side walls are arranged at the upper end of each side wall of the base parts support means for bridging arrangement is formed to the card with pivotally supported upwardly shielded space, with the rotation pivot part is a front cross-sectional first portion includes a shaft portion of the circular, the back of the shaft portion The front section of the part is an inverted triangle, and is integrally provided with a rotating fulcrum part whose lower end coincides with the height of the center of the shaft part, and the support means abuts the lower end of the rotating fulcrum part at the upper end surface of the side wall. A high-frequency relay comprising: a fulcrum base; and a square hole formed at an upper end portion of a side wall that is continuous with the fulcrum base and having an open upper end, and an axially outer surface of the shaft portion is rotatably contacted on both inner surfaces .

The lower part is integrated with the peripheral surface above the position where the circular section of the shaft part is vertically divided into two, and the reinforcing rib whose upper surface is the same height as the upper surface of the card is integrally formed over the entire length of the shaft part . The high frequency relay according to claim 1.

2. The high frequency relay according to claim 1, wherein a reinforcing rib having a lower portion integrated with a top portion of the shaft portion and an upper surface having the same height as the upper surface of the card is integrally formed over the entire length of the shaft portion .

The high frequency relay according to any one of claims 1 to 3 , wherein a gap is provided between a bottom portion of the square hole and a lower end of the shaft portion .

A rotation support portion that protrudes toward the card is provided on a ceiling surface of a case that is deposited on the base, and the rotation support portion is fitted into a portion of the card that faces the ceiling surface side of the case. any high frequency relay according to claim 1 to 4 bottom in terms of the card side of the turning support portion is characterized in that a recessed portion which is rotatably supported by the card itself.

The position of the card, which is provided in the electromagnet block and is pushed by an armature that is attracted and operated when the electromagnet block is excited, and is pushed by a return spring that returns the card to a predetermined position when the electromagnet block is not energized. 6. The high frequency relay according to claim 1, wherein the position of the card is opposed to the card .

The card, the Rukoto such a synthetic resin molded article in which the gate is formed by using a molding die which is provided so as to be position above the and position of the return spring gate mark is at the center of the molding RF relays according to claim 6, wherein.